Molybdenum Single-Atom Solid-Acid Catalyst for the Hydrogen Evolution Reaction in the Alkaline Electrolyte

IF 11.3 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2025-01-24 DOI:10.1021/acscatal.4c05602

Guang Yang, Chunyu Zhang, Zhigang Chen, Juan Wang, Guoliang Gao, Zhiyun Li, Rong Huang, Yi Cui

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Abstract

Tailoring the gradient-pH catalytic environment around single-atom centers is rather meaningful in water electrolysis. Herein, we report a two-step strategy including hydrothermal and electrochemical optimization to synthesize PO₄^3– and AlO_x^– simultaneously coordinated Mo single-atom catalysts on carbon-coated Ni foam. The abundant bridging oxygen atoms between Mo and P/Al atoms result in appealing adsorption and activation of water reactant, as well as an energy-favorable hydrogen desorption behavior due to their solid-acid nature. Consequently, the well-designed Mo–P–Al@NF @NF single-atom solid-acid catalyst system exhibits a comparable hydrogen evolution reaction activity in 1.0 M KOH electrolyte with current response beginning at nearly zero overpotential, delivering a typical current density of 10 mA/cm² only requiring overpotential of 48 mV. Moreover, it also shows comparable stability with negligible activity degradation after continuous hydrogen production over 100 h. Our work may provide a guideline for the development of single-atom solid-acid catalysts toward highly efficient water electrolysis and beyond.

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.